Plastic Injection Insert Molding Manufacturing Solutions
We provide professional insert molding solutions that integrate metal, ceramic, or prefabricated components directly into plastic during injection molding. This process eliminates secondary assembly and delivers higher structural strength, improved reliability, and cost-efficient mass production.
- One-step molding without secondary assembly
- Enhanced bonding strength and vibration resistance
- Lightweight yet structurally reinforced designs
What Is Insert Molding?
Insert molding is an advanced plastic injection molding process where metal, ceramic, or threaded inserts are precisely positioned in the mold and encapsulated by molten plastic during injection.
Compared with traditional post-assembly methods, insert molding significantly improves product strength, consistency, and manufacturing efficiency.
- Traditional assembly: manual fitting, loosening risk, higher labor cost
- Insert molding: integrated structure, higher strength, lower total cost
Our Insert Molding Process
Ultrasonic cleaning and surface texturing improve bonding strength by up to 40%.
Mold alignment accuracy ±0.005 mm with magnetic or vacuum positioning.
Precise control of temperature and pressure prevents insert displacement.
Optimized cooling ensures strong molecular adhesion and dimensional stability.
Industry Applications & Verified Performance
- Automotive: Yield rate improved to 99.2%, 30% cost reduction
- Electronics: Copper pin accuracy ±0.015 mm, pull-out force up to 180 N
- Medical & Industrial: Sterilization-resistant housings and joints
Key Design Principles for Insert Molding
- Knurled or undercut insert structures improve pull strength by 30–50%
- Modular mold design with ±0.005 mm positioning accuracy
- 100+ validated material combinations including PEEK + stainless steel
- Controlled surface texture for mechanical interlocking
Quality Control in Insert Molding
- Incoming inspection: insert tolerance within 0.02 mm
- Process monitoring: temperature and pressure fluctuation ≤ ±1%
- Finished inspection: 100% surface and dimensional checks
- Performance testing: pull strength and environmental reliability
Why Choose Us for Insert Molding?
- 20+ years of experience in injection molding and precision tooling
- Servo-controlled machines supporting parts from 50g to 5000g
- Advanced inspection equipment including ZEISS CMM systems
- Fast response: process proposals in 3 days, samples in 5–7 days
